The BavTech tool you refer to is mostly used for diagnostics - checking/clearing errors (you can however, register your battery with it).

It does NOT do the type of coding referred to in this subforum. It uses it's own special software to work and will NOT work with the downloadable BMW software contained in this subforum.

If you want to have the best of both worlds, buy the MUCH cheaper cable from 'automotive-tool' on eBay as explained in another thread, download the free BMW software. You will then be able to do diagnostics, check/clear errors, code, and register your battery...

Is the BT tool pretty much obsolete then now that you can just do everything via coding? I guess it's a slightly more user friendly tool?